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Farmall & IHC Tractors Discussion Forum
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should crank be hard to turn in no oil?

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Booe

01-20-2006 23:40:02




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alright. im rebuilding my m and i can deffinately tell its had a rebuild recently. everything looks great in it. but i pulled the tractor apart because the throw out bearing was pretty torn up. well i got the motor torn down becasue one piston was stuck. well i have it just sitting there so i turned the flywheel to see how hard the crank is to turn over. it has no pistons or anything and its not in any oil and it is a little tough to turn. should it be really easy? i dont think i need to replace the bearings becasue it had new pistons, new rod bearings. barely a scratch on any of them. but im not sure about the crank. i looked on this site for a bearing set but im not sure what one to order. it sais early and late models but i dont know what mine is. its a 1945 m and has a serial number of 88085 but i couldnt find any other numbers. also does anyone happen to know the head torque on the head? and last question that is totally out in left field. if you have a lift on the front of your tractor can you still have fenders? there doesnt look like there is much room. thanks!

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captaink

01-21-2006 17:33:19




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 Re: should crank be hard to turn in no oil? in reply to Booe, 01-20-2006 23:40:02  
Just a crankshaft in the block with lube in the bearings it will probably take a “bump” of more pressure to get it rolling, but once it is rolling, it should keep turning pretty easy. Any additional parts will take more effort to keep it rolling.



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Wayne Swenson

01-21-2006 06:37:14




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 Re: should crank be hard to turn in no oil? in reply to Booe, 01-20-2006 23:40:02  
The crank should turn easily without anything attached if it has some lube; is the camshaft still in place? It needs oil also.
I would definitly take the mains apart & examine them. Be sure to prelube everything on re-assembly.
Fenders can usually be installed; you may need spacers to set them out a ways. Your situation depends on how the loader mounts to the axle.



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El Toro

01-21-2006 03:57:14




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 Re: should crank be hard to turn in no oil? in reply to Booe, 01-20-2006 23:40:02  
Your main bearing journals should measure 2.7475-2.7485" unless they're worn or have been ground undersize. This changed starting with SN 278050 when they used a heavier shaft and the mains measured 2.8075-2.8085". The Super M used this shaft too. Rods should measure 2.4975-2.4985".

The head torque is 110 ft-lbs. I would have that
crankshaft measured at your local auto machine shop to see if's egg-shaped. Your old bearing insert should be marked on the back side whether they're std or are undersize. Torques for any Farmall can be found under tuneups on weberstractorworks.com. Hal

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Janicholson

01-21-2006 09:52:08




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 Re: should crank be hard to turn in no oil? in reply to El Toro, 01-21-2006 03:57:14  
The advice is good I would add that it is not good to turn the crank without oil in the system, or engine assembly grease on the parts. If it has been running withing the last month, thin it is probably not an issue. If older, I would not rotate it without pressurizing the oil galeries. (tape over the crank journals with blue masking tape to help lube get to mains, then remove all of it.) Good luck,
JimN

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